NadekoBot.Extensions should now be fully annotated with nullable reference types as well as many classes from NadekoBot.Common

src/NadekoBot/Common/OptionsParser.cs

@@ -1,4 +1,5 @@
-using CommandLine;
+#nullable disable
+using CommandLine;
 
 namespace NadekoBot.Common;
 
@@ -21,4 +22,4 @@ public static class OptionsParser
         options.NormalizeOptions();
         return (options, res.Tag == ParserResultType.Parsed);
     }
-}
+}